Saya muntah karena mabuk laut di kapal feri.

Yes. Muntah here is a verb meaning to vomit / to throw up.

In Saya muntah ..., it works like an intransitive verb, so you do not need an object after it.

• Saya muntah. = I threw up.
• Anak itu muntah. = That child threw up.

In some contexts, muntah can also be used as a noun-like word meaning vomit, but in this sentence it is clearly the verb.

Karena means because.

So the structure is:

• Saya muntah = I threw up
• karena mabuk laut = because of seasickness / because I was seasick

This is a very common way to give a reason in Indonesian.

Examples:

• Saya pulang karena lelah. = I went home because I was tired.
• Dia tidak datang karena sakit. = He/She didn’t come because he/she was sick.

Literally, yes, the parts are:

• mabuk = drunk / intoxicated / sick from motion
• laut = sea

But as a fixed expression, mabuk laut means seasick / seasickness.

This is similar to how Indonesian often builds expressions by combining words into a natural phrase.

Related expressions:

• mabuk perjalanan = motion sickness
• mabuk udara = airsickness
• mabuk mobil = car sickness

So you should learn mabuk laut as one chunk meaning seasick.

It can mean both, depending on context.

Common uses of mabuk:

• drunk / intoxicated
• sick from motion or dizzy/nauseous from travel

Examples:

• Dia mabuk. = He/She is drunk.
• Saya mabuk laut. = I’m seasick.
• Anak itu mabuk perjalanan. = That child gets motion sickness.

So in this sentence, mabuk does not mean alcohol-related drunkenness. The word laut makes the meaning clear.

Di kapal feri means on the ferry.

It comes at the end because Indonesian often places location phrases after the main statement and reason:

• Saya muntah = I threw up
• karena mabuk laut = because I was seasick
• di kapal feri = on the ferry

So the sentence flows naturally as: I threw up because I was seasick on the ferry.

You could also move the location earlier for emphasis, but the original order is very natural.

For example:

• Di kapal feri, saya muntah karena mabuk laut.

That version emphasizes where it happened.

In Indonesian, di is the usual preposition for in / at / on, depending on context.

So:

• di rumah = at home / in the house
• di sekolah = at school
• di meja = on the table
• di kapal feri = on the ferry

English makes a stronger distinction between in, on, and at, but Indonesian often uses di for all of them. The exact meaning comes from the noun and the situation.

Kapal feri means ferry boat / ferry ship.

• kapal = ship / boat / vessel
• feri = ferry

Putting them together makes the meaning very clear: it is a ferry vessel, not just the concept of a ferry crossing.

In everyday speech, some people may simply say feri if the context is obvious, but kapal feri is perfectly normal and clear.

Related words:

• kapal = ship / boat
• kapal laut = seagoing ship
• kapal pesiar = cruise ship

Indonesian verbs do not change form for tense the way English verbs do.

So muntah stays muntah whether the action is past, present, or general. The time is understood from:

• context
• time words
• the situation

So Saya muntah karena mabuk laut di kapal feri could mean:

• I threw up because I was seasick on the ferry
• I vomit because I get seasick on ferries
• I’m vomiting because I’m seasick on the ferry

But in ordinary context, people usually understand the intended time from the conversation. If you want to make the time explicit, you can add a time marker:

• Tadi saya muntah karena mabuk laut di kapal feri. = Earlier, I threw up because I was seasick on the ferry.
• Saya sedang muntah ... = I am vomiting ...
• Saya akan muntah ... = I am going to vomit ...

Yes, often it can be omitted if the subject is already clear from context.

So you may hear:

• Muntah karena mabuk laut di kapal feri.

This can sound natural in conversation if everyone knows you are talking about yourself.

However, including Saya makes the sentence clearer and more complete, especially for learners and in neutral speech.

Yes, but it means something different.

• Saya mabuk laut di kapal feri. = I was seasick on the ferry.
• Saya muntah karena mabuk laut di kapal feri. = I threw up because I was seasick on the ferry.

So mabuk laut describes the condition, while muntah describes the result/action.

If you only want to say you felt seasick, use mabuk laut. If you specifically want to say you vomited, use muntah.

It is mostly neutral everyday Indonesian.

The words are standard and easy to understand:

• saya is neutral-polite for I
• muntah is standard
• karena is standard
• mabuk laut is standard
• di kapal feri is standard

In casual speech, someone might use aku instead of saya:

• Aku muntah karena mabuk laut di kapal feri.

That sounds more informal and personal.

The original word order is very natural, but Indonesian word order is somewhat flexible, especially with adverbials like reason and place.

Original:

• Saya muntah karena mabuk laut di kapal feri.

Possible variation:

• Di kapal feri, saya muntah karena mabuk laut.

This version emphasizes the location first.

You could also say:

• Saya muntah di kapal feri karena mabuk laut.

That is also understandable and natural. It may slightly highlight where the vomiting happened before giving the reason.

So the word order is not completely fixed, but the original sentence is a good standard pattern.

A rough pronunciation guide is:

sah-yah moon-tah ka-REH-nah mah-book LAH-oot dee KAH-pahl FEH-ree

A few useful notes:

• saya often sounds like sah-yah
• muntah ends with a clear h, though in fast speech it may be light
• karena is usually pronounced ka-re-na
• mabuk has u like oo in food, but shorter
• laut is two vowels together: la-ut, often sounding close to lah-oot
• feri is pronounced roughly feh-ree

Indonesian pronunciation is generally quite regular, so once you learn the sound system, sentences like this are much easier to read aloud.